com.xu.scanner.Demo04

Posted 2021-05-25 寻找加油

package com.xu.scanner;

import java.util.Scanner;

public class Demo04 {
    public static void main(String[] args) {
        Scanner scanner=new Scanner(System.in);//Scanner是类，scanner是变量名；

        //从键盘接收数据
        int i=0;
        float f=0.0f;
        System.out.println("请输入整数：");
        //如果。。。。，那么
        if(scanner.hasNextInt()){
            i=scanner.nextInt();
            System.out.println("整数数据："+i);
        }else{
            System.out.println("输入的不是整数数据！");
        }

        System.out.println("请输入小数：");
        //如果。。。。，那么
        if(scanner.hasNextFloat()){
            f=scanner.nextFloat();
            System.out.println("小数数据："+f);
        }else{
            System.out.println("输入的不是小数数据！");
        }

"D:\\Program Files\\Java\\jdk1.8.0_281\\bin\\java.exe" "-javaagent:D:\\Program Files\\JetBrains\\IntelliJ IDEA 2021.1\\lib\\idea_rt.jar=64046:D:\\Program Files\\JetBrains\\IntelliJ IDEA 2021.1\\bin" -Dfile.encoding=UTF-8 -classpath "D:\\Program Files\\Java\\jdk1.8.0_281\\jre\\lib\\charsets.jar;D:\\Program Files\\Java\\jdk1.8.0_281\\jre\\lib\\deploy.jar;D:\\Program Files\\Java\\jdk1.8.0_281\\jre\\lib\\ext\\access-bridge-64.jar;D:\\Program Files\\Java\\jdk1.8.0_281\\jre\\lib\\ext\\cldrdata.jar;D:\\Program Files\\Java\\jdk1.8.0_281\\jre\\lib\\ext\\dnsns.jar;D:\\Program Files\\Java\\jdk1.8.0_281\\jre\\lib\\ext\\jaccess.jar;D:\\Program Files\\Java\\jdk1.8.0_281\\jre\\lib\\ext\\jfxrt.jar;D:\\Program Files\\Java\\jdk1.8.0_281\\jre\\lib\\ext\\localedata.jar;D:\\Program Files\\Java\\jdk1.8.0_281\\jre\\lib\\ext\\nashorn.jar;D:\\Program Files\\Java\\jdk1.8.0_281\\jre\\lib\\ext\\sunec.jar;D:\\Program Files\\Java\\jdk1.8.0_281\\jre\\lib\\ext\\sunjce_provider.jar;D:\\Program Files\\Java\\jdk1.8.0_281\\jre\\lib\\ext\\sunmscapi.jar;D:\\Program Files\\Java\\jdk1.8.0_281\\jre\\lib\\ext\\sunpkcs11.jar;D:\\Program Files\\Java\\jdk1.8.0_281\\jre\\lib\\ext\\zipfs.jar;D:\\Program Files\\Java\\jdk1.8.0_281\\jre\\lib\\javaws.jar;D:\\Program Files\\Java\\jdk1.8.0_281\\jre\\lib\\jce.jar;D:\\Program Files\\Java\\jdk1.8.0_281\\jre\\lib\\jfr.jar;D:\\Program Files\\Java\\jdk1.8.0_281\\jre\\lib\\jfxswt.jar;D:\\Program Files\\Java\\jdk1.8.0_281\\jre\\lib\\jsse.jar;D:\\Program Files\\Java\\jdk1.8.0_281\\jre\\lib\\management-agent.jar;D:\\Program Files\\Java\\jdk1.8.0_281\\jre\\lib\\plugin.jar;D:\\Program Files\\Java\\jdk1.8.0_281\\jre\\lib\\resources.jar;D:\\Program Files\\Java\\jdk1.8.0_281\\jre\\lib\\rt.jar;C:\\Users\\徐文昭\\Desktop\\JavaSE\\out\\production\\基础语法" com.xu.scanner.Demo04
请输入整数：
1
整数数据：1
请输入小数：
0.1
小数数据：0.1

Process finished with exit code 0

        scanner.close();
    }
}